Batteries and Rumors Fuel New Talk of Cheating in Cycling - NYTimes.com

Batteries and Rumors Fuel New Talk of Cheating in Cycling - NYTimes.com: "The Gruber Assist boosts riders’ efforts rather than transforming their bicycles into motorbikes. Schweitzer said the system supplements a rider’s input by an additional 100 to 110 watts. Given that a pro cyclist might typically produce about 400 watts during the final 30 minutes of a race, the device offers a significant gain despite a weight gain of about four pounds for the stock system."